package cn.lefull.jpa;

/**
 * @description:
 * @author: qijiang
 * @date: 2019/4/28 10:12
 */

public class Single {
    static  Single insetall = new Single();
    static  String a = "aa";
    private Single(){
        System.out.println("初始化single");
        System.out.println(a);
    }



    public static void a(){
        System.out.println(a);
        a="22";
        System.out.println(a);
    }


}
